posted May 02, 2008 07:59 AM
08 punching the cat!Hello all, I just joined and wanted to say howdy as well as ask a question. I am very interested in a new exhaust for my 08 Zx. In researching options I have seen where the cat in the stock header is drilled out. This looks attractive due to cost. In searching I have not been able to find a "how to" or a write up on this procedure.

Can anyone provide info on this or a guide? I am weighing cost savings over how much time it is going to take for me to do this.

posted May 02, 2008 08:19 AM
Welcome to the forum..Sorry can't answer your question though..I went with yosh pipe's..But i do know if you change the exhaust in any config you should install a power commander..
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i play with boats my wife plays with my dingy.

posted May 02, 2008 08:41 AM
I'm almost certain that everyone who gets on here may not recommend this. Have you considered slip-ons if your looking to save a few dollars? Also, you might wanna check on e-bay for a used exhaust systems if you are patient enough. Whatever you do, I hope you get rid of them Star Trek specials.

posted May 02, 2008 10:41 AM
You still will have the third cat in the collectors. Be patient and save up for some slip-ons at least.
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Speed has never killed anyone,
suddenly becoming stationary...
That's what gets you.

posted May 02, 2008 10:54 AM
Thank you for the welcomes! Indeed I plan on adding a PC and slip-ons but I am wanting to know how to get rid of the third cat just before it splits for the two exhausts. I am aware that the 08 has the three cats one in each muffler and then the third one I am trying to remove (thinking of removing).

Thus far I think you all are right about getting the full system but when the wife asks, I want to make sure I have bases covered . Plus I did see someone do this but it was just pictures.

posted May 02, 2008 11:02 AM
I'm wondering the same thing about the cat in the collector. The '08 actually has a larger diameter header so my thought was to remove/drill/chisel/dyanamite the cat out and put slip ons with a PC3. I think the author of this thread, like me, is looking for the most effective method of getting the cat out. I'm curious about once that is done and slip-ons and a PC3 is installed how much of a difference there would be between that set up and a full system with a PC3?

posted May 02, 2008 11:42 AM
Any good slip-ons for an 08 will get rid of all of the cats. The stock mufflers are permanently attached to the pipes that lead to the collector so most just extend or have a simple collector. The full system is the best, but not everyone has the $$ to spend.
____________
Speed has never killed anyone,
suddenly becoming stationary...
That's what gets you.

posted May 02, 2008 11:45 AM
FasterThanStink-
You are correct up to a point on the third cat. For the 08 Kawi snuck it right in where the pipe splits at the "y". 08 is the only year so far that this has been done hence why I wanna blast that stinker out.

quote:Any good slip-ons for an 08 will get rid of all of the cats. The stock mufflers are permanently attached to the pipes that lead to the collector so most just extend or have a simple collector. The full system is the best, but not everyone has the $$ to spend.

that is incorrect. 0n the 08 the third cat is at the y and the other two are in the pipes. previous years only had cats in the muffs. therefor slips will only remove 2 of the 3 cats on 08's.
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08 ZX14 Atomic Silver, Yosh TRC

posted May 03, 2008 08:20 AM
I hang out over there too but no one has detailed the process they used to get the cat out or helpful hints. I still don't understand folks going toward the full system on the '08????? Someone straighten me out here. My plan is to remove that cat, be left with a larger more free flowing header (I may get it coated), and then put on a nice pair of slip ons. I can't imagine that what I just mentioned would be much shorter on power gain than a full system.

HAS ANYONE REMOVED THE CAT ON AN '08 AND DO YOU HAVE A PROCESS OR HELPFUL HINTS?

quote:I hang out over there too but no one has detailed the process they used to get the cat out or helpful hints. I still don't understand folks going toward the full system on the '08????? Someone straighten me out here. My plan is to remove that cat, be left with a larger more free flowing header (I may get it coated), and then put on a nice pair of slip ons. I can't imagine that what I just mentioned would be much shorter on power gain than a full system.

HAS ANYONE REMOVED THE CAT ON AN '08 AND DO YOU HAVE A PROCESS OR HELPFUL HINTS?

Thanks.

It will be by about 7-8 horsepower.
The cats main problem is the heat not the HP loss. Modern cats cause very little actual loss. Possibly 1-2 HP total. Thats it. The fact that they start to function at 800 degrees is the problem. Some slip -ons and a hammer. It's not rocket science. Just punch the sucker out.
____________
Speed has never killed anyone,
suddenly becoming stationary...
That's what gets you.

quote:I hang out over there too but no one has detailed the process they used to get the cat out or helpful hints. I still don't understand folks going toward the full system on the '08????? Someone straighten me out here. My plan is to remove that cat, be left with a larger more free flowing header (I may get it coated), and then put on a nice pair of slip ons. I can't imagine that what I just mentioned would be much shorter on power gain than a full system.

HAS ANYONE REMOVED THE CAT ON AN '08 AND DO YOU HAVE A PROCESS OR HELPFUL HINTS?

posted May 03, 2008 10:27 AM
Edited By: busajack5 on 3 May 2008 17:28Yo Zedex,I have drilled out my center cat and am using slipons and wish I lived where I could race some of these guys that insist on full systems for that 2 HP at 10000 RPM.My old busas were supposed to be great on low end and they were nuthing like this 14 on the low end. All you need is long drill bits,at least 8 inches.Drill cuss drill cuss.Just kidden but it takes a couple hours to get it all out and OMG what a difference.Iam using the Muzzy slip ons and PClll with muzzys map. Yes it probably weights 8 pounds more than a full system but so do most of these guys.THHE They sit here waiting for Brock to announce some hundred HP system when In reality hes having trouble making enough more HP than the stock headers to make his systems worth the extra money..All you hear is how much more peak HP. Well I dont ride around at peak RPM.Ask about Torque at 3000 to 8000 where you ride most of the time. If you need any help PM me Jack. PS those picts. above are my bike.
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Jack

posted May 03, 2008 12:01 PM
Well, I'd say the gauntlet has been thrown down. Someone put your money where your mouth is and lets see the dyno results of an '08 with a full system vs an '08 with the third cat removed and slip ons. Both with good maps of course.

I'm really interested in the low end torque for carving twisties. Is there a preferred set up for that? I could really care less about a few horsepower on the top end.

posted May 03, 2008 12:39 PM
Remove the secondary butterfly valves. Even on an 08 you will get a significant amount additional low end torque.
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Speed has never killed anyone,
suddenly becoming stationary...
That's what gets you.

quote:Well, I'd say the gauntlet has been thrown down. Someone put your money where your mouth is and lets see the dyno results of an '08 with a full system vs an '08 with the third cat removed and slip ons. Both with good maps of course.

I'm really interested in the low end torque for carving twisties. Is there a preferred set up for that? I could really care less about a few horsepower on the top end.

Dyno schimno bring your bike out here,I have an interstate all to myself for a hundred miles. I guess Ill have to post a run with torque aginst HP. Torque is what makes a bike fun to ride.If you want to pay over a grand for mandrel bends be my guest.The stock headers are. If all you do is drag race yes then max HP is what you want but how many folks here just drag.http://www.youtube.com/watch?v=N10raR2ADBE&NR=1
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Jack

posted May 05, 2008 11:18 PM
Edited By: robrooter on 6 May 2008 06:20ive removed my 3rd cat with a hammer an 4 screwdrivers which took 3hours,it has made a differnce in sound and is louder definate to do

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Ride it, Respect it, It can an will bite you when you least expect. /smilies/smile.gif" border=0>

posted May 05, 2008 11:53 PM
Edited By: Zedexdragon on 6 May 2008 06:54Thanks all for your replies!!!! Using a hammer and drill on something for more than 2 minutes if it aint dead I am for sure pissed off , adult ADD!!! Unexpected windfall sees me putting a SMEG on the bike. Going to order it here soon from Brock along with a PC. While wanting to save cash is a big plus I have to admit I just do not have the patience to work on the header for a couple hours cussing at it.

posted May 06, 2008 01:57 AM
i have been waiting to punch my cat. currently just running yosh trc pipes. i am concerned about the bike needing a remap with the collector cat punched, and have not seen evidence that the stock mapping is ok with all the cats removed. would really like to know, and if stock map is not sufficient - what map out their will work?

quote:Thanks all for your replies!!!! Using a hammer and drill on something for more than 2 minutes if it aint dead I am for sure pissed off , adult ADD!!! Unexpected windfall sees me putting a SMEG on the bike. Going to order it here soon from Brock along with a PC. While wanting to save cash is a big plus I have to admit I just do not have the patience to work on the header for a couple hours cussing at it.

Cheers all
Kinley

Yup your the typical new generation,cant do it yourself pay for it. Kinda like folks that belong to Psysical Fitness clubs.They pay to go exercize when they could stay home and clean and paint and fix what their houses need and get the same exercize for free plus keeping there neighborhood up..Any one here that can't spot a neighbor who dosen't keep up his house.Bet they belong to a health club. You better learn to help yourself or some rag head will do it for you and you can pay him..TEHE
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Jack